Pretty Dump Cross References

wollmers has asked for the wisdom of the Perl Monks concerning the following question:

Hi monks,

One of my subs returns structures like this:

$VAR1 = [
          [
            [
              0,
              0
            ],
            [
              2,
              2
            ]
          ],
          [
            [
              1,
              0
            ],
            $VAR1->[0][1]
          ]
        ];
[download]

The above is the output of Data::Dumper, which in case of larger structures is hard to compare for debugging. Is there something better or maybe an option to get a dump without reference notation like this:

Comment on Pretty Dump Cross References Select or Download Code

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Re: Pretty Dump Cross References by LanX (Saint) on Nov 28, 2014 at 23:54 UTC
> Is there something better what is "better"? There are plenty of options to format the output, you should read the documentation and play around. > or maybe an option to get a dump without reference notation This looks promising `$Data::Dumper::Deepcopy or $OBJ->Deepcopy([NEWVAL]) Can be set to a boolean value to enable deep copies of structures. Cro +ss-referencing will then only be done when absolutely essential (i.e. +, to break reference cycles). Default is 0.` [download] You may also want to have a look at Data::Dump which comes with nicer defaults. Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :)}	[reply] [d/l]
Re^2: Pretty Dump Cross References by wollmers (Scribe) on Nov 29, 2014 at 00:06 UTC
Thx Of course, I read the docs of Data::Dumper more than twice, and tried around some options, but did not understand some parts. Examples would say more than hundred words.	[reply]
Re^3: Pretty Dump Cross References by LanX (Saint) on Nov 29, 2014 at 00:21 UTC
> Examples would say more than hundred words. What about: http://search.cpan.org/~smueller/Data-Dumper-2.154/Dumper.pm#EXAMPLES ? Especially this line: "See the testsuite in the Data::Dumper distribution for more examples." Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :)} update testsuite	[reply]
Re: Pretty Dump Cross References by Perlbotics (Archbishop) on Nov 28, 2014 at 23:56 UTC
Perhaps Data::Dump gives you terse string representations that are easier to read and compare? Test::Differences might be useful to compare data structures and highlight differences automatically.	[reply]

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